Shock-absorber.



W. 0. OLSON.

SHOCK ABSORBER. APPLIOAT'ION FILED APR. 14, 1913.

l 1,097,353, Patented May 19, 1914 fha/'wif ofy which the 'SHOCK-Assouan.

Specicatioof Letters Patent. vApplication filed April 14, 1913. Serial No. 760,935.

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WILLIAM O. OLSON, or oHIoAcO, ILLINOIS.

`To all whom it may concern: l

Be it known that 1W1LLIAMLO. OLSON, a citizen of thv Chicago, in thecounty of Cook and State of' Illmois, have inventedcertain new and useful Improvements in, ShOck-Absorbers,

following isy a specification., This invention relates .to shock absorbers and has more particular reference to shock materially increase absorbers such as are adapted for' use `on .automoblles to prevent excessive movement of thefvehicle body relatively tO the axles.,

kmainsprings of the vehicle should break,

thereby permitting ,the vehicle to yrun .without carrying the body directly on the axles. c A f yA` further object is `the provision of a shock absorber which will be simple in construction, cheap to manufacture, efficient and durable in operation and one which will materially increase the comfort of riding.

Other objects and advantages of the iny vention will be readily apparent to those skilled rin the art as the invention is bett-er understood by reference to thefollowing description -when considered in connection with the accompanying drawings. t

vReferring to th drawings- -Figurel `isa fragmentary view of a portion of an auto-y mobile equipped with my invention; Fig. 2 is. an enlarged view of myv improved shock absorber, c'ertain 'parts being shown in sec'- tion shownmin Fig. 2; Fig. '4 is a fragmentary view, looking toward the right at the shock absorber shown in Fig. 1; and Fig; 5 is a view similarnto Fig. 1 showing a'modified I form of invention. i On kthe rawings reference character 6 1n- -dicates a portion of the chassisr of the automobile carried ,bytire .usual elliptical spring 7 supported. from..the,axle 8., theseparts being of any well known or preferred construction.

United States, yand residentI of' Fig. 3 is a plan view of the-structure adapted to be positioned between the axle ,andthe vehicle body comprises a cylinder 9 .closed at its upper end and open at its lower end, saidcylinder being equipped with outwardly projecting fiangesll over .whichthe clips 1 2 may be fastened to secure the cylinder upon the axle or spring. Within the cylinder is arranged a plunger 13 carried by a rod 14 projecting through the upper closed end ofthe cylinder. A compression spring 15 is disposed between the top of the cylinder and one face of the plunger. The open bottom of the cylinder may be closed by ,a plate 16, or other suitable-closure, 4set and between this plate and the lower face of ltheplunger is disposeda second compression spring 17. The springs 15 and 17, acting against opposite `faces of the plunger 13, normally holdthe plunger substantially in the position shown in Fig. 2,.

Patented May 19, 1914.

470 1n a recess 1n the bottom of thel cylinder 'Y Upon the cylinder and preferably integrally therewith I have formed a' bracket 18 which projects upwardly above the cylinder and ispreferably forked at its upper end:

as shown in ,.Fig. 3 to receive a lever 19 which is pivoted in the bracket upon a pin 21. One end of the lever is `connected with the upper end of the rod 14 by a pin 22, or other suitable pivotal connection.` The outer end ofthe lever is pivotally connected by .a pin 23 with a link 24 which, in turn, is plvotally connected to the upper endn in a fbracket or bearing 25--vxed to the frame of themachine'by bolts or other suitable fastoning means.

4When the vehicle frame approaches vthe axle the. plunger 13 is moved upw'ardlyin the cylinder against the force of the spring 15 and when the vehicle body moves upwardly the plunger is forced downwardly against the action ofthe spring. Movement Y AO- the plunger, therefore, in. ethendirecf. tion from the normal central position is resisted by either the spring 15er the spring 17'andV undue movements of the frame rela- 1tively to -the axle are', accordingly, precluded. In order toprovide for an adjust- 4ment of the absorber to vehicle vbodies lof different weights, or to` vehicle vsprings of ditferent strengths, I have provided .the l.

longer, arm-.of the lever 19 -witha plurality of holes 26 so that the longer end of the l .link `241: maybe connectedv with the lever atj any one of a plurality of points. -It will be -My improvedl shock absorber whichl ,manifestthatas thepivotal connection be,

t-ween the link 24 and the lever 19 is moved nearer the ulcrum 21 of the lever the plunger 13 will be given a greater movement by the same movement of the vehicle frame and this adjustment may be made whenever necessary to compensate 'for differences in strength of the vehicle springs.

' In the form of my invention shown in Fig. 5 the lever 27 which is connected at 28 with the plunger rod 14 is directly connected at its other end with the bearing member 25 by a .pin 29, the link 24 being eliminated from this construction. In order to compensate for movements of the lever 27\v and to permit the rod/14 to move in a right line I have provided the lever 27 .with an elongatedslot 31iwhich bears on a pin 32 carried by a bracket 33. This slotted bearing permits a suiiicient longitudinal movement -of the lever 27 to enable the rod 14 to move up and down in a rightline.

Under ordinary conditions the spring 15 will carry the weight of the car if the supporting springs 7 should become broken but, in order to obviate any possibility of injury to the mechanismwhich might be caused by the frame 6 striking the lever 19 or the ears 18, I have provided the casing 9 with an upwardly projecting socket 34 adapted to receive and carry a buffer 35 of rubber or yother suitablematerial. It will be observed from an inspection of the drawings that the top .of this bu'er extends above the ears 18 and the lever 19 so that if the body of the car should drop by reason of the'breakage of the spring 7 or of the spring 15 the weight of the body will be carried by this buier without injury to the shock absorber.

It is believed that my invention will be readily 4understood from the foregoing without further description andit will be obvious that should a vehicle'spring become broken the 'weight of the bod would be carried by the spring 15 of t e absorber without permitting the body to drop upon the axle. This feature is of material iniportance in that it will enable the user to drive his car with' a broken spring without in any way injuring the body or the axles.

l/Vhile I have shown and described those embodiments of my invention which at present seem tobe preferable, it should be understood that the size, shape, proportion and arrangement of the various elements may be changed considerably within thel scope of my invention as defined in the following claims. v

I claim:

1. A shock absorber comprising a casing adapted to be secured to the axle of an automobile, a plurality of compression springs arranged in said casing, a. plunger disposed between said springs and adapted to compress one or the other of said springsupon movement in either direction, a rod con- -nected with said plunger and projecting ymounted between its ends in said bracket and connected at one end with said rod, and

connections between the other end of said lever and the frame of the automobile whereby said lever is actuated to move said plunger against the force of one .of said springs upon movement of `said frame relatively tothe axle.

2. The combination with a vehicle comprising a frame, an' axle and a spring con-V necting -said frame and axle, ofl a casing secured to said axle and ositioned between the springv and said ame, a plunger mounted to reciprocate in said casing, lcern- -pression springs disposed between the ends of said casing and said plunger, a rod'secured to said plunger and projecting through the upper end of said casing, a bracket mounted on the casing and projecting upwardly therefrom, a lever `pivot'ed 1 intermediate its ends on said `bracket and connected at 'one end to said rod, and a pivotal connection betweenV the other endof said lever and' the vehicle 'frame whereby movementl of theframerelatively to. the

axle in eitherdirection is'resisted by one of said springs. :if

3. The -combinationcf a casing open at one end, a plunger mounted to reciprocate in said casing, a compression spring disposed between said plunger and the closed end of said casing, -a removable plate for closing the other end of the casing, a second compression spring disposed between said plunger and said plate, a bracket projecting upwardly from saidcasing, a leverl pivota'lly mounted in said bracket, a rod projecting through theupper end of said casing and connecting one end of said lever with said plunger, and means whereby the other end of said lever may be connected toa vehicle body.

4. A shock'absorber comprising a' casing adapted to be secured to the axle of an automobile, aplurality of compression'springs arranged in said casing, a plunger disposed between said springs and adapted to compress one or the other of the springs upon movement m either direction, a rod connected with said plunger and projecting above the casing, a lever pivotally lmounted on saidl casing and connected at one end with said rod, connections between the other end of said lever and the vehicle body, and a buffer carried by said casing and projecting above the upper end of said rod in position to support the body of the vehicle.

5. A shock absorber comprising a cylindrical casing, aplurality of coiled expansion springs disposed therein, a plunger positioned between said springs-and adapted to reciprocate longitudinally of the casing,

isa

a plunger rod rojecting through'the top vof sald casing, aracket projecting upwardly from one side of said casing, a lever crumed between its ends in said bracket, one 5 en d of said lever being connected with said plunger rod, a link adjustably connected to the other end of said lever and adapted to be attached to the frame of a.- vehiele, and abufer carried by said cai-ting and projecting above said lever in position to receive and 10 support the vehicle body in the event of breakage of the vehicle spring.

` WILLIAM O. OLSON. Witnesses:

IRA J. WILSON, FRANKLIN M. WARDEN.

Gopiel of this patent may be obtained for ve cents each, by addressing'ithe Commissioner of Patents, Washington, D. C. 

